Mira Stars - IV: R Lyn, W Lyr, RY Oph, R Peg, X Peg and R Per

Details Mira Stars - IV: R Lyn, W Lyr, RY Oph, R Peg, X Peg and R Per Mira Stars - IV: R Lyn, W Lyr, RY Oph, R Peg, X Peg and R Per

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jbaa...99..275i&link_type=abstract

Journal of the British Astronomical Association, vol.99, no.6, p.275-281

Astronomy and Astrophysics

Astronomy

4

Scientific paper

Some 36,000 visual observations of six Mira stars, observed for between 55 and 70 years, are analysed, and the results are compared with catalogue data. A number of interesting correlations are found among features in the light curves. R Lyn and W Lyr vary slowly in amplitude. No evidence is found for variation in the mean periods; but W Lyr shows short-term oscillations of cycle length about the mean. These oscillations, and similar behaviour previously noted in X Aur, R Boo and T Her, may represent phase jitter due to an imperfect coupling with the mechanism within the star driving the variations.

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